1. はじめに
The Garmin Forerunner 955 is a premium GPS running and triathlon smartwatch designed to support athletes in their training and performance. This manual provides essential information for setting up, operating, maintaining, and troubleshooting your device, ensuring you get the most out of its advanced features.

Figure 1: Garmin Forerunner 955 Whitestone Smartwatch, front view.
5. メンテナンス
5.1. バッテリー寿命と充電
The Forerunner 955 offers impressive battery life:
- スマートウォッチモードで最大15日間。
- GPSモードで最大42時間。
- Up to 80 hours in UltraTrac mode.
To charge, connect the device using the included charging/data cable to a USB power source. Regular charging helps maintain battery health.

図6:背面 view of the Forerunner 955, showing the charging contacts and optical heart rate sensor.
5.2. 一般的なケア
- クリーニング: 定期的に時計とストラップを柔らかくて清潔な布で拭いてください。amp cloth to prevent buildup of sweat and debris.
- 耐水性: The device is designed for water activities; however, avoid pressing buttons underwater to prevent water ingress. Rinse with fresh water after exposure to chlorinated or salt water.
- ストレージ: デバイスを使用しないときは、涼しく乾燥した場所に保管してください。
8. 保証とサポート
For warranty information, product registration, and additional support resources, please visit the official Garmin web当サイトをご覧いただくか、Garminカスタマーサービスまでお問い合わせください。保証請求の際は購入証明書を保管してください。
ガーミンサポート: www.garmin.com/support